Look at the keys in your hand, is your house door safe?
"One word" AB lock key, "Cross" lock key, double row curve slot key, single row pullout key, blade key, snake key
Class A lock B-level lock can not stop the thief, Super B-class lock core is the real anti-theft lock
"So we recommend the use of Super B-class locks, the anti-technical opening time of the Super B-class locks is more than 270 minutes, the anti-violence is turned on for more than 30 minutes, the locks are replaced and upgraded to the super B-class mechanical lock cylinders, and the anti-control technology sets are locked into the room. theft."
Class A lock
At present, the A-level anti-theft lock key on the market mainly has a word key and a cross key. The internal structure of the A-class lock cylinder is very simple, limited to the change of the marble, and the marble groove is small and shallow. The anti-technical opening time is extremely high within 1 minute. The marble structure is a single row of marbles or a cross lock.
Class B lock
The B-class lock key is a flat-panel key with a double-row marble slot. The difference with the A-class lock is that there is a row of curved and irregular lines on the key surface. The main types of lock cylinders are 3 types, computer double-row lock core, double-row crescent lock core, double-sided vane lock core. The anti-technical opening time is 5 minutes, and the mutual opening rate is high. With a strong twist tool, the lock cylinder can be opened in 1 minute.
Super B lock
The shape of the key is a single-sided blade inner milling slot or an outer milling slot key. The lock cylinder type is a side cylinder lock core; it can not be technically opened after 270 minutes of inspection by the Ministry of Public Security, and the regional mutual opening rate is zero (one million and one million) . The structure of the marble is locked by the double row of blades and the V-shaped side column; if the lock cylinder is opened by a strong twisting tool, the internal core of the lock cylinder is broken and the self-explosion is locked, resulting in failure to open.
Lock maintenance tips
When the lock is in use, periodically (half year or once a year) or when the key is not inserted smoothly, do not use any liquid oil such as cooking oil as a lubricant to prevent the grease from sticking to the marble spring, resulting in the lock not being able to be locked. Turn it and it won't turn on. Usually you can use the pencil at home to apply to the key, and then insert the lock cylinder to rotate a few times to play the role of lubrication. In addition, professional lubricants, rust inhibitors, etc. for locks are also available. Some zinc alloys and copper locks, when installed on the door for a long time, will find "spots". This phenomenon is not rust, but is oxidation. If this happens, just wipe it with a surface wax. You can remove the spots.
How to pick the lock
The first trick: buy a lock to see the "teeth" of the key. The more teeth, the deeper the teeth, the more complicated the arrangement, the more difficult it is to open, and the better the anti-theft performance.
The second measure: pick the lock on the pound, said two, one to see the lock core. The heavier the weight, the better the quality of the lock cylinder. The more beads in the lock cylinder, the better the anti-theft function.
The third measure: choose the lock core to see the color, look at the work than the color. The quality of the lock cylinder is electroplated, the surface is smooth and the color is bright. Among them, the color is dark yellow, the copper core is relatively strong, the anti-theft performance is better, the color of the lock core is dim, the color is gray and the bubble is zinc alloy, and the anti-theft performance is general.
The fourth measure: the key rotation is inserted into the lock cylinder. The anti-theft performance of the card is poor. After the key is half-inserted, use 5 to 7 minutes to rotate clockwise or counterclockwise and continue to press the key into the lock. The key of the card indicates the lock core. Poor performance, the smooth insertion of the lock cylinder in the semi-rotation state shows that the anti-theft effect is good.